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Add a test for PR #72617 #76261

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Merged
merged 1 commit into from
Sep 5, 2024
Merged

Add a test for PR #72617 #76261

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37 changes: 37 additions & 0 deletions test/IRGen/loadable_by_address_reg2mem.sil
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Original file line number Diff line number Diff line change
Expand Up @@ -24,6 +24,25 @@ struct X {
var x16: Int
}

struct X2 {
var x1 : Int
var x2 : Int
var x3 : Int
var x4: Int
var x5: Int
var x6: Int
var x7: Int
var x8: Int
var x9: Int
var x10: Int
var x11: Int
var x12: Int
var x13: Int
var x14: Int
var x15: Int
var x16: Int
}

struct Y {
var y1 : X
var y2: X
Expand Down Expand Up @@ -314,3 +333,21 @@ bb0:
%t = tuple ()
return %t : $()
}

// CHECK: sil @test13
// CHECK: [[ADDR:%.*]] = unchecked_addr_cast %1 : $*X to $*Y
// CHECK: copy_addr [take] [[ADDR]] to [init] %2 : $*Y
// CHECK: } // end sil function 'test13'
sil @test13 : $@convention(thin) (@in X) -> () {
bb0(%0 : $*X):
%1 = alloc_stack $Y
%2 = alloc_stack $X
copy_addr [take] %0 to [init] %2 : $*X
%4 = load %2 : $*X
%7 = unchecked_bitwise_cast %4 : $X to $Y
store %7 to %1: $*Y
%13 = tuple ()
dealloc_stack %2 : $*X
dealloc_stack %1 : $*Y
return %13 : $()
}